Strip-like instrument washing device

ABSTRACT

In order to provide a band-like apparatus cleaning device for removing foreign materials and cleaning a band-like apparatus before the foreign materials become huge on the surface of the band-like apparatus without scattering the foreign materials around by improving a cleaning structure such as the shape of an aperture for shower and the like for the band-like apparatus, there is provided a cleaning device of a band-like apparatus, comprising a hollow rotating roll being supported so as to be capable of turning along the traveling direction of the band-like apparatus and having a plurality of apertures for shower formed in it, and cleaning fluid jetting nozzles arranged at the inner side of the plurality of apertures for shower within an embracing angle of the band-like apparatus wound partially round the rotating roll, the cleaning device cleaning the band-like apparatus by jetting a cleaning fluid to the band-like apparatus from the cleaning fluid jetting nozzles, wherein the cleaning device comprises a plurality of blade plates being adjacent in parallel with the roll axis of the rotating roll in the traveling direction of the band-like apparatus and provides the plurality of blade plates and the rotating roll so as to be capable of freely reciprocating in the roll axis direction.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to a cleaning device of band-likeapparatus for a paper machine being a paper manufacturing appliance, theband-like apparatus being used in a wire part, a press part and a drypart in a paper making stroke.

2. Background Art

In general a paper manufacturing appliance, for example, a paper machinepours a pulp suspension being a raw material onto a wire belt andthereby performs a dehydrating process, transfers a sheet-shaped pulpfiber obtained by the dehydrating process onto a press belt in a presspart, removes water contained in the pulp fiber through a pressingprocess and thereby produces a wet paper web. And in a dry part, ittransfers the wet paper web obtained in the press part onto a canvasbelt and further evaporates moisture therein.

In such a paper making stroke, foreign materials are stuck on thesurface of a band-like apparatus such as a wire belt, a press belt, acanvas belt and the like, namely, on the surface of a band-like cleaningobject, and these foreign materials are generally natural resin or gummaterial extricated from wood, pulp, paper and the like, and furthernon-water-soluble adhesive materials having such organic matter asadditive chemicals and the like used in a paper making stroke as themain ingredient. And these foreign materials are minute adhesivematerials being present on a wet paper web in a dry part for example,and are made viscous by heating and stuck on the surface of a canvasbelt or a roll.

As a result, these adhesive materials receive pressure of paper, a dryerroll and the like from the surface of the canvas, come into and depositin the inside of the canvas, and cause the degree of ventilation of thecanvas to decrease. And the adhesive materials which have expanded andgrown on the surface of the canvas adhere again or fall from the roll tothe canvas and from the canvas to paper. As the result, there has beenproblems that stains or dents produced on the surface of the canvascause breaking or defects of paper and cause the degradation in qualityor productivity due to troubles such as deterioration in quality or inproductivity caused by breaking of paper and the like.

Thereupon, as disclosed in Japanese Patent Laid-Open Publication No.5-504604 for example, there has been disclosed a method of providing anair blowing-off nozzle and a water jet device along a wire belt, blowingoff an air flow against a band-like cleaning object from the nozzle,feeding water from the water jet device and thereby forming a water filmon the inner face of wire, blowing away and sucking foreign materialsthrough taking them in water by the air flow blown off from the airblowing-off nozzle, collecting the foreign materials in a hood and thuscleaning the wire belt.

However, an air blowing-off nozzle needs to be arranged at a distancefrom the surface of a band-like cleaning object so as not to touch anddamage the band-like cleaning object, and since a high-pressure cleaningfluid jetted from a water jet device exerts a large pressure on theband-like cleaning object, the water jet device and the cleaning objecthave needed to be arranged at a more distance from each other.

As a result, a cleaning object and a device such as a nozzle or the likecannot be made close to each other, and in order to secure a certaincleaning capability the jet pressure to the cleaning object must be madehigh, and therefore the capability of the jet device has needed to beincreased by increasing the jet pressure and the like. Due to this, theband-like cleaning object is liable to be damaged by a large jetpressure exerted on the band-like cleaning object, and since theband-like cleaning object needs to be more frequently replaced and theamount of cleaning fluid (air, water and the like) used is increased,there has been a problem that such a method leads to the increase inmanufacturing cost and in running cost.

Therefore, the present inventor has proposed a cleaning device arranginga cleaning fluid jetting nozzle inside a hollow rotating roll andcleaning a band-like cleaning object through an aperture for showerformed in the rotating roll from the jet nozzle. However, this cleaningdevice has only provided a plurality of apertures for shower at acertain pitches in the roll axis direction of the rotating roll alongthe roll rotating direction, but has not been made to completely cleanaway dirt such as foreign materials and the like from the band-likecleaning object by effectively utilizing the shape of an aperture forshower, a rotating roll and the like. As a result, it has beenunsatisfactory from the viewpoint of the degree of cleaning of aband-like cleaning object.

Thereupon, an object of the invention is to provide a cleaning device ofa band-like apparatus, being made so as to clean away foreign materialsbefore the foreign materials become huge on the surface of a band-likecleaning object without scattering the foreign materials around byimproving a cleaning structure such as the shape of an aperture forshower and the like for the band-like cleaning object, in considerationof the above-described points.

DISCLOSURE OF THE INVENTION

In order to achieve the above-described object, the present invention isattained by a cleaning device of a band-like apparatus, comprising ahollow rotating roll being supported so as to be capable of turningalong the traveling direction of the band-like apparatus and having aplurality of apertures for shower formed in it, and cleaning fluidjetting nozzles arranged at the inner side of the plurality of aperturesfor shower within an embracing angle of the band-like apparatus woundpartially round the rotating roll, the cleaning device cleaning theband-like apparatus by jetting a cleaning fluid to the band-likeapparatus from the cleaning fluid jetting nozzles, wherein the cleaningdevice comprises a plurality of blade plates being adjacent in parallelwith the roll axis of the rotating roll in the traveling direction ofthe band-like apparatus and provides the plurality of blade plates andthe rotating roll so as to be capable of freely reciprocating in theroll axis direction.

And the above object is effectively attained by arranging a plurality ofblade plates in parallel with the roll axis of the rotating roll andforming a plurality of projected portions and depressed portions atspecified pitches at the contact side with the band-like apparatus ineach of the blade plates.

And the above object is effectively attained by forming projected anddepressed portions at the contact side with the band-like apparatus ineach blade plate.

And the above object is effectively attained by using three blade platesand forming projected and depressed portions at blade projection pitchesof 20 to 40 mm.

And the above object is effectively attained by forming apertures forshower out of a plurality of long and narrow opening holes formed in therotating roll and providing a plurality of slits formed so as tointersect the opening holes.

And the above object is effectively attained by arranging three parallelslits in an inclined direction relative to the longitudinal direction ofthe apertures for shower as a plurality of slits.

And the above object is effectively attained by making a plurality ofslits cross one another in the shape of X relative to the longitudinaldirection of the apertures for shower.

And the above object is effectively attained by forming a band-likeapparatus out of a roll for felt in a press part of a paper makingstroke and setting the width of a slit in a range of 8 to 12 mm.

Further, the above object is effectively attained by forming theband-like apparatus out of a roll for canvas in a dry part of a papermaking stroke and setting the width of a slit in a range of 20 to 22 mm.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1(A) is a schematic perspective view of a cleaning device of aband-like apparatus according to the present invention.

FIG. 1(B) is a sectional view taken along line X-X of FIG. 1(A).

FIG. 2 is a partially sectional view taken along the axial direction ofa cleaning device of a band-like apparatus from which cleaning device ablade device is removed.

FIG. 3 is a figure showing a plurality of apertures for shower formed inthe surface of a rotating roll.

FIG. 4 is a sectional view taken along line Y-Y of FIG. 3.

FIG. 5 is a graph showing the relation between the slit width of anaperture for shower and the degrees of cleaning and wear in a rotatingroll for press of S300.

FIG. 6 is a graph showing the relation between the slit width of anaperture for shower and the degrees of cleaning and wear in a rotatingroll for press of S400.

FIG. 7 is a graph showing the relation between the slit width of anaperture for shower and the degrees of cleaning and wear in a rotatingroll for press of S500.

FIG. 8 is a graph showing the relation between the slit width of anaperture for shower and the degrees of cleaning and wear in a rotatingroll for press of S600.

FIG. 9 is a graph showing the relation between the slit width of anaperture for shower and the degree of cleaning in a rotating roll forcanvas of S300.

FIG. 10 is a graph showing the relation between the slit width of anaperture for shower and the degree of cleaning in a rotating roll forcanvas of S400.

FIG. 11 is a graph showing the relation between the slit width of anaperture for shower and the degree of cleaning in a rotating roll forcanvas of S500.

FIG. 12 is a graph showing the relation between the slit width of anaperture for shower and the degree of cleaning in a rotating roll forcanvas of S600.

FIG. 13 is a graph showing the relation between the shape of a slit andthe degree of cleaning.

FIG. 14 is a figure showing the shape of a blade plate according to theinvention.

FIG. 15 is a front view of a blade plate being a variation example ofthe invention.

FIG. 16 is a partial plan view of a rotating roll being a variationexample of the invention.

FIG. 17 is a partial plan view of a rotating roll being a variationexample of the invention.

FIG. 18 is a partial plan view of a rotating roll being a variationexample of the invention.

FIG. 19 is a graph showing the relation between the blade projectionpitch and the degree of cleaning.

FIG. 20 is a graph showing the relation between the blade projectionpitch and the degree of cleaning.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A band-like apparatus cleaning device according to the present inventionis described in detail with reference to the drawings in the following.

FIG. 1(A), FIG. 1(B) and FIG. 2 show a rough configuration of aband-like apparatus cleaning device 10, and the band-like apparatuscleaning device 10 is mainly composed of a hollow rotating roll 21, acleaning fluid jetting device 31, a sliding device 41 and a blade device51. This band-like apparatus cleaning device 10 is provided in each of awire part, a press part and a dry part in a paper making stroke, and ismade so as to clean away foreign materials such as an adhesive material,fiber and the like stuck on a band-like apparatus 11 such as a wirebelt, a press belt, a canvas belt and the like.

And as shown in FIG. 2, the hollow rotating roll 21 supports a hollowsupporting shaft 24 so as to be capable of freely turning by means ofbearings 23 mounted on left and right sliding stands 42 of the slidingdevice 41. And the hollow rotating roll 21 rotates in the travelingdirection of the band-like apparatus 11 (direction of arrow in FIG.1(A)) in a state of having the band-like apparatus wound partially roundthe hollow rotating roll 21, the band-like apparatus being given aspecific tension, and has a number of apertures for shower 25 formedalong the circumferential direction. At this time, the hollow rotatingroll 21 is provided with a plurality of apertures for shower 25 formedalong the roll rotating direction at certain pitches P in the axialdirection of the roll.

Hereupon, the hollow rotating roll 21 is provided with a cutwater ring27 more inside (at the roll side) than the bearing 23 supporting thehollow supporting shaft 24 and thereby prevents lubricant of the bearing23 and the like from being splashed over the band-like apparatus 11wound partially round the hollow rotating roll 21.

Although the hollow rotating roll 21 may be forcibly driven, it may beturned being dragged by the band-like apparatus 11 moving in itstraveling direction with a certain slippage relative to the band-likeapparatus 11.

As a material for the hollow rotating roll 21, special stainless steelis adopted, but any kind of materials being proof against ahigh-temperature and high-humidity environment in a dry part and beingrich in corrosion resistance may be used.

And the cleaning fluid jetting device 31 has a fixed roll 32 arranged soas to have a certain space inside the hollow rotating roll 21 and isfixed through a hollow supporting shaft 33 by a supporting stand 34mounted on a sliding stand 42 of the sliding device 41. A cleaning fluidjetting nozzles 35 is attached to the fixed roll 32 within an embracingangle of the band-like apparatus wound partially round the hollowrotating roll 21 and is arranged closely to and at the inner side of anaperture for shower 25.

In such a way, by arranging a cleaning fluid jetting nozzle closely toan aperture for shower 25, it is possible to decrease a fluid jetpressure necessary for keeping a certain cleaning capability and alsoreduce the amount of cleaning fluid used. And Decrease of a fluid jetpressure prevents wear and clogging of a cleaning fluid jetting nozzle35 and thereby makes it possible to prolong the life of the band-likeapparatus cleaning device 10. Further, in a cleaning fluid jettingdevice 31 at this time, nozzle groups 36 each being composed of aplurality of cleaning fluid jetting nozzles 35 are file-arranged alongthe longitudinal direction of each aperture for shower 25 (aperturegroup 26) at each pitch P corresponding to each aperture for shower 25(aperture group 26) of the hollow rotating roll 21 in the roll axisdirection of the hollow rotating roll 21.

And the cleaning fluid jetting device 31 inserts cleaning fluid jettingtubes 37 into the fixed roll 32 from an opening of the hollow supportingshaft 33 and connects cleaning fluid jetting heads 38 composed of squaretubes and the like to these cleaning fluid jetting tubes 37, and aplurality of cleaning fluid jetting nozzles 35 are connected in thelongitudinal direction of the cleaning fluid jetting heads 38. Thiscleaning fluid jetting head 38 extends from the left or right end of thefixed roll 32 to the middle part of the fixed roll 32. And the fluid jetpressure from a cleaning fluid jetting nozzle 35 connected to eachposition in the longitudinal direction of each cleaning fluid jettinghead 38 is made to be equal to each other in the longitudinal directionof each cleaning fluid jetting head 38 by reducing gradually thecross-sectional area of each cleaning fluid jetting nozzle 38 as beingcloser from the left or right end of the fixed roll 32 to the middle ofthe fixed roll 32, and the like.

And the sliding device 41 is made so as to mount a sliding stand 42 onguide rails 44 extending in the axial direction of the hollow rotatingroll 21, the rails being provided on a stand 43 and let this slidingstand 42 support the hollow rotating roll 21 and the cleaning fluidjetting device 31. This sliding device 41 is made so as to screw-engagea feed screw 46 to be driven by a motor 45 supported by the stand 43with the sliding stand 42 and make the hollow rotating roll 21 and thecleaning fluid jetting device 31 reciprocate within a range exceedingthe pitch P of the aperture group 26 and nozzle group 36 as one body inthe roll axis direction of the hollow rotating roll 21 by turning themotor 45 forward and backward.

And as shown in FIG. 3, an aperture for shower 25 of the hollow rotatingroll 21 is formed into a long and narrow shape and two parallel slitportions 28 are provided so as to intersect the aperture for shower 25.Since the slit portions 28 are pushed into the band-like apparatus 11due to such shock as vibration or the like in a process in which theband-like apparatus 11 is traveling on the roll surface of the hollowrotating roll 21, the band-like apparatus 11 comes to move in a zigzagdirection. As a result, foreign materials which have come into theinside (minute gaps between warp and woof) of the band-like apparatus 11result in, as shown in FIG. 4, being rubbed and kneaded out by so-calledrubbing and kneading action at point M and then being scraped away tothe outside by so-called scraping-away action at point K. That is tosay, thanks to these two actions (rubbing and kneading action andscraping-away action), the band-like apparatus 11 can extend gapsbetween warp and woof, collect foreign materials being about to comeinto the inside of the band-like apparatus 11 on the surface of theband-like apparatus 11 and thereby remove a more amount of foreignmaterials.

Due to this, it is possible to improve the degree of ventilation of theband-like apparatus 11, prolong the life of the band-like apparatus 11,reduce a troublesome maintenance work by reducing the frequency ofreplacing periodically the band-like apparatus 11, and reduce the laborcost and the running cost. And since the degree of ventilation isimproved, it is possible to make the water of a wet paper web exhalesufficiently through meshes of the band-like apparatus 11 and increasethe drying efficiency of paper.

In this case, since when the width W of an aperture for shower 25 ismade broader the band-like apparatus 11 comes to be more liable to movein a zigzag direction and more liable to receive a rubbing and kneadingaction and a scraping-away action, it is possible to remove more foreignmaterials from the surface of the band-like apparatus 11. In the presentinvention, therefore, experiments were performed with regard to therelation between the aperture for shower 25 and the degree of cleaning.

First, varying the diameter (face length) of a hollow rotating roll 21,experiments were performed using rolls for press and canvas with regardto the relation between the slit width of an aperture for shower 25 andthe degrees of cleaning and wear of a band-like apparatus. As a result,with regard to a roll for press, as shown in FIGS. 5 to 8, it has beenfound that the degrees of cleaning and wear are the most preferable incomprehensive evaluation in case of 8 mm in slit width in S300, in caseof 10 mm in slit width in S400, in case of 10 mm in slit width in S500,and in case of 12 mm in slit width in S600. On the other hand, withregard to a roll for canvas, as shown in FIGS. 9 to 12, in considerationof the machining cost of the roll, it has been found that the degree ofcleaning is the most preferable in case of 20 mm in slit width in S300and S400, and in case of 22 mm in slit width in S500 and S600. In aword, from the viewpoint of degree of cleaning, it has been found thatit is preferable to set the slit width in a range of 8 to 12 mm withregard to a roll for press and set the slit width in a range of 20 to 22mm with regard to a roll for canvas.

That is to say, the degree of cleaning was 11 hours and the degree ofwear was 83% in case of 8 mm in slit width using S300 with regard to aroll for press. And the degree of cleaning was 13 hours and the degreeof wear was 79% in case of 10 mm in slit width using S400. And thedegree of cleaning was 14 hours and the degree of wear was 81% in caseof 10 mm in slit width using S500. And the degree of cleaning was 14hours and the degree of wear was 79% in case of 12 mm in slit widthusing S600. On the other hand, with regard to a roll for canvas, theamount of adhesive foreign materials stuck therein being an index of thedegree of cleaning was 540 g in case of 20 mm in slit width using S300,the amount of adhesive foreign materials stuck therein was 920 g in caseof 20 mm in slit width using S400, the amount of adhesive foreignmaterials stuck therein was 750 g in case of 22 mm in slit width usingS500, and the amount of adhesive foreign materials stuck therein was 550g in case of 22 mm in slit width using S600.

Hereupon, “S300” is a band-like apparatus cleaning device of 314 mm inroll diameter and 1500 mm to 3400 mm in roll surface length, “S400” is aband-like apparatus cleaning device of 400 mm in roll diameter and 3500mm to 4900 mm in roll surface length, “S500” is a band-like apparatuscleaning device of 500 mm in roll diameter and 5000 mm to 6200 mm inroll surface length, and “S600” is a band-like apparatus cleaning deviceof 600 mm in roll diameter and 6300 mm to 7400 mm in roll surfacelength.

Next, experiments with regard to the relation between the shape of aslit and the degree of cleaning were performed varying the slits inshape. As a result, as shown in FIG. 13, an aperture for shower providedwith three cross-shaped slits was the best in cleaning performance inS300, S400 and S600, while an aperture for shower provided with threeinclined slits was the best in cleaning performance in S500.

By this, it is possible to jet a cleaning fluid jettingted from cleaningfluid jetting nozzles 35 connected to cleaning fluid jetting heads 38 atpositions where the cleaning fluid jetting nozzles correspond to anozzle group 36 to which the respective cleaning fluid jetting nozzlesbelong from apertures for shower 25 of the hollow rotating roll 21 to aband-like apparatus 11 by a cleaning fluid jetting device 31, whilemaking the cleaning fluid jetting device 31 and the hollow rotating roll21 reciprocate as one body in the roll axis direction.

Accordingly, it is possible to clean a band-like apparatus 11 over thewhole width of it, and to make the steam being a cleaning fluid jettedfrom a cleaning fluid jetting device 31 remove and collect foreignmaterials from the inside of the band-like apparatus 11 on the surfaceof the band-like apparatus 11. And since it is possible to clean theband-like apparatus 11 over the whole width of it and remove foreignmaterials, the moisture profile of paper is made stable. That is to say,no undried portion appears in a sheet of paper and paper being good inquality is obtained.

And as shown in FIG. 1(A), a blade device 51 is provided with two bladeplates 52, and a save-all 53 is provided under the blade plates 52.Light fibers (paper powder) and the like are made to fall in thesave-all 53 at the entrance side of a blade portion 54 but foreignmaterials stuck on the band-like apparatus 11 which have not been madeto fall even by slit portions 28 of apertures for shower 25 of thehollow rotating roll 21 as described above are scraped away by the bladeplates 52.

This blade device 51 scrapes away foreign materials stuck on the surfaceof the band-like apparatus 11 by pressing the edges 55 of the bladeplates 52 against the surface of the band- like apparatus 11 at acertain pressure. The scraped-away foreign materials stay on the surfaceof the band-like apparatus 11 pressed by the edges 55, adhere to oneanother at the back side of the edges 55 of the blades 52, and expandand grow in the shape of a strip of paper. Therefore, it is possible tosecurely remove the foreign materials stuck on the surface of theband-like apparatus 11 without scattering them around. And the band-likeapparatus 11 is not worn by the scraping of the blades 52, and furtherthe warp of the band-like apparatus 11 is not degraded in strength.

As shown in FIG. 14, the edge of a blade plate 52 has a shape capable ofefficiently expanding and growing foreign materials into the shape of astrip of paper, namely, the two blade plates 52A and 52B have notches56A and 56B corresponding to pitches P of the apertures for shower 25 ofthe hollow rotating roll 21, and the two blade plates 52A and 52B aremounted so that these notches 56A and 56B are arranged alternatelyzigzag.

Due to this, when a band-like apparatus cleaning device 10 operates, ifit is a flat single plate having no notch, the whole device vibrates anda band-like apparatus 11 is made wavy and results in vibrating up anddown in a process of carrying the band-like apparatus 11, and partswhere the band-like apparatus 11 comes into contact with and no contactwith the blade plates 52 appear. As a result, parts from which foreignmaterials are scraped away and not scraped away by the blade plates 52appear, but by providing such notches in the blade plates 52, theband-like apparatus 11 is made to come into contact with the bladeplates at locations 57 without fail. Therefore, by installing bladeplates 52 so that notches 56A and 56B of the blade plates 52A and 52Bare alternately arranged, it is possible to bring the blade plates 52uniformly into contact with the whole surface of the band-like apparatus11. And by providing such notches in the blade plates 52, it is possibleto concentrate the actions of heat and contact pressure at the contactparts between the edges 55 of the blade plates 52 and the band-likeapparatus 11, efficiently expand and grow foreign materials, remove theexpanded and grown foreign materials in a state where they are formedinto a strip shape, collect the foreign materials in a state where theyare scattered in the save-all 53, and prevent a drainpipe of thesave-all 53 from getting clogged.

And a blade device 51 of a band-like apparatus cleaning device 10according to the invention is not limited to the case of providing twoblade plates 52A and 52B as described above, but may be provided withthree blade plates 52A′, 52B′ and 52C′ at specified pitches, as shown inFIG. 15 for example. That is to say, it is enough to provide a pluralityof blade plates 52 so that they form a flat single plate having nonotches when they are superposed one over another.

And the shapes of apertures for shower 25 and slit portions 28 are notlimited to the shapes as described above, but such shapes as the pitch,width and length of an aperture for shower 25 and the number of slitsand the like may be determined depending on a kind of the band-likeapparatus 11 and an embracing angle of the band-like apparatus 11 woundpartially round the hollow rotating roll 21, and the shape of them maybe, for example, a shape where three slit portions 28 are providedperpendicularly to the longitudinal direction of an aperture for shower25 as shown in FIG. 16, a shape where three parallel slit portions 28are provided at an inclined angle relative to the longitudinal directionof an aperture for shower 25 as shown in FIG. 17, or a shape where slitportions 28 are crossed in the shape of X as shown in FIG. 18, so that arubbing and kneading action and a scraping-away action as describedabove efficiently exert on the band-like apparatus 11.

Thereupon, experiments were performed with regard to the relationbetween the blade projection pitch and the degree of cleaning, varyingthe number of blade plates 52. As a result, as shown in FIG. 19, thelargest amount of foreign materials (about 1500 g) could be collected incase of using three blade plates and a blade projection pitch of 20 to40 mm, preferably, 30 mm as shown in FIG. 19. And the degree of cleaningwas the most preferable in case of the blade projection pitch of 25 mmas shown in FIG. 20.

And since a band-like apparatus 11 can be cleaned uniformly over thewhole width of it by providing a plurality of blade plates 52 providedwith notches as described above to form a flat single plate having nonotches when they are superposed one over another and further providinga flat blade plate, a flat blade plate having no notches may beprovided.

And although the present invention adopts stainless steel as a materialfor a blade plate 52, any kind of materials being proof against ahigh-temperature and high-humidity environment in a dry part and beingrich in corrosion resistance may be used.

And in a band-like apparatus cleaning device 10, a band-like apparatus11 may be wound partially round a hollow rotating roll 21 setting adirt-resistant surface of the band-like apparatus 11 as the inner faceto be in contact with the hollow rotating roll 21, and may be woundpartially round the hollow rotating roll 21 setting a surface of theband-like apparatus 11 as the outer face of the band-like apparatus 11to be in no contact with the hollow rotating roll 21.

1. A cleaning device of band-like apparatus, comprising a hollowrotating roll being supported rotatably along the traveling direction ofthe band-like apparatus and forming a plurality of apertures for shower,and cleaning fluid jetting nozzles arranged at the inside of theplurality of apertures for shower within a wrapping angle of theband-like apparatus to the rotating roll, the cleaning device ofband-like apparatus that cleans the band-like apparatus by jetting acleaning fluid from the cleaning fluid jetting nozzles to the band-likeapparatus, wherein the cleaning device provides with a plurality ofblade plates being adjacent in parallel with the roll axis of therotating roll in the traveling direction of the band-like apparatus, andprovides in the free reciprocation the plurality of blade plates and therotating roll in the roll axial direction.
 2. A cleaning device ofband-like apparatus according to claim 1, wherein the plurality of bladeplates are arranged in parallel with the roll axis of the rotating roll,and each of the blade plates has a plurality of unevenness formed atspecified pitches at the contact side with the band-like apparatus.
 3. Acleaning device of band-like apparatus according to claim 2, whereineach of the blade plates has some unevenness formed at the contact sidewith the band-like apparatus.
 4. A cleaning device of band-likeapparatus according to claim 3, wherein three blade plates are used asthe blade plates, and the unevenness are arranged at blade convexpitches of 20 to 40 mm.
 5. A cleaning device of band-like apparatusaccording to claim 1, wherein the apertures for shower are a pluralityof long narrow opening holes formed on the rotating roll, and are formeda plurality of slits formed so as to intersect the opening holes.
 6. Acleaning device of band-like apparatus according to claim 5, wherein asthe plurality of slits three parallel slits are arranged in an obliquedirection relative to the longitudinal direction of the aperture forshower.
 7. A cleaning device of band-like apparatus according to claim5, wherein the plurality of slits cross one another in the shape of Xrelative to the longitudinal direction of the aperture for shower.
 8. Acleaning device of band-like apparatus according to claim 1, wherein theband-like apparatus consists of a roll for felt in a press part of apaper making stroke, and the width of the slits set in a range of 8 to12 mm.
 9. A cleaning device of band-like apparatus according to claim 1,wherein the band-like apparatus consists of a roll for canvas in a drypart of a paper making stroke, and the width of the slits set in a rangeof 20 to 22 mm.